JPS4881562A - - Google Patents
Info
- Publication number
- JPS4881562A JPS4881562A JP47121741A JP12174172A JPS4881562A JP S4881562 A JPS4881562 A JP S4881562A JP 47121741 A JP47121741 A JP 47121741A JP 12174172 A JP12174172 A JP 12174172A JP S4881562 A JPS4881562 A JP S4881562A
- Authority
- JP
- Japan
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/64—Imaging systems using optical elements for stabilisation of the lateral and angular position of the image
- G02B27/646—Imaging systems using optical elements for stabilisation of the lateral and angular position of the image compensating for small deviations, e.g. due to vibration or shake
- G02B27/648—Imaging systems using optical elements for stabilisation of the lateral and angular position of the image compensating for small deviations, e.g. due to vibration or shake for automatically maintaining a reference alignment, e.g. in self-levelling surveying instruments
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Telescopes (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AUPA728871 | 1971-12-07 | ||
| AUPA908272 | 1972-05-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS4881562A true JPS4881562A (en) | 1973-10-31 |
Family
ID=25641966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP47121741A Pending JPS4881562A (en) | 1971-12-07 | 1972-12-06 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3807869A (en) |
| JP (1) | JPS4881562A (en) |
| CA (1) | CA977137A (en) |
| DE (1) | DE2258700A1 (en) |
| FR (1) | FR2162534B1 (en) |
| GB (1) | GB1349438A (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4149321A (en) * | 1977-03-15 | 1979-04-17 | Kivioja Lassi A | Mercury leveling instruments |
| FR2422182A1 (en) * | 1978-04-03 | 1979-11-02 | Sopelem | OPTICAL OBSERVATION INSTRUMENT |
| SE431021B (en) * | 1979-06-14 | 1983-12-27 | Bofors Ab | AUTOMATIC DIRECTING INSTRUMENT FOR AN ARTILLERY PIPE |
| SE420648B (en) * | 1980-03-26 | 1981-10-19 | Bo Nordgren | TILT ADJUSTMENT DEVICE |
| GB2160995A (en) * | 1984-06-30 | 1986-01-02 | Francis Albert Shaw Innes | Optical instrument stabiliser |
| US5724744A (en) * | 1993-04-07 | 1998-03-10 | Micro Italiana S.P.A. | Self-leveling device mounted on a rotating base for projecting laser rays |
| US5541727A (en) * | 1993-08-27 | 1996-07-30 | Rando; Joseph F. | Automatic level and plumb tool |
| US5459932A (en) * | 1993-08-27 | 1995-10-24 | Levelite Technology, Inc. | Automatic level and plumb tool |
| US5617202A (en) * | 1994-05-24 | 1997-04-01 | Levelite Technology, Inc. | Diode laser co-linear and intersecting light beam generator |
| US5610711A (en) * | 1995-12-22 | 1997-03-11 | Levelite Technology Inc. | Remote pointing system for a self-leveling laser instrument |
| US6542304B2 (en) * | 1999-05-17 | 2003-04-01 | Toolz, Ltd. | Laser beam device with apertured reflective element |
| US7134211B2 (en) | 2004-03-18 | 2006-11-14 | Black & Decker Inc. | Laser level |
| US7181854B2 (en) | 2004-08-17 | 2007-02-27 | Eastway Fair Company Limited | Laser leveling device having a suction mounting arrangement |
| US20080052927A1 (en) * | 2006-09-05 | 2008-03-06 | Eastway Fair Company Limited | Self-leveling line generator |
| US20080052926A1 (en) * | 2006-09-05 | 2008-03-06 | Eastway Fair Company Limited | Gravity dial level indicator for line generator |
| US20080062669A1 (en) * | 2006-09-07 | 2008-03-13 | Parel Thomas M | Gravity dial level indicator for line generator |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1531693A (en) * | 1921-11-12 | 1925-03-31 | Leon F Douglass | Method and apparatus for producing novel and double-image effects in photography |
| DE550075C (en) * | 1930-09-13 | 1932-05-13 | Ludwig Becker Dr | Artificial horizon |
| US3013464A (en) * | 1955-05-05 | 1961-12-19 | Keuffel & Esser Co | Optical level |
| CH365228A (en) * | 1957-05-27 | 1962-10-31 | Magyar Optikai Muevek | Telescope with a light control pendulum |
| JPS51466B1 (en) * | 1969-07-31 | 1976-01-08 |
-
1972
- 1972-11-27 GB GB5464172A patent/GB1349438A/en not_active Expired
- 1972-11-29 US US00310454A patent/US3807869A/en not_active Expired - Lifetime
- 1972-11-30 DE DE19722258700 patent/DE2258700A1/en active Pending
- 1972-11-30 CA CA158,007A patent/CA977137A/en not_active Expired
- 1972-12-06 JP JP47121741A patent/JPS4881562A/ja active Pending
- 1972-12-07 FR FR7243551A patent/FR2162534B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2162534B1 (en) | 1976-06-11 |
| US3807869A (en) | 1974-04-30 |
| GB1349438A (en) | 1974-04-03 |
| FR2162534A1 (en) | 1973-07-20 |
| DE2258700A1 (en) | 1973-06-14 |
| CA977137A (en) | 1975-11-04 |